Aim: Present investigation was carried out to study the physical
characteristics of Kankrej bulls semen by evaluation of various semen parameters
from neat semen and at various stages of semen preservation.
Materials and
Methods: A total of 60 ejaculates, 10 each from 6 mature Kankrej bulls, once
in a week for 10 weeks, were collected and analyzed for various semen
attributes.
Result: The mean values for different seminal attributes
were: ejaculate volume 4.84 + 0.01 ml, pH 6.88 + 0.01, mass
motility 3.72 + 0.02, sperm concentration 1253.83 + 14.68 million
/ ml, individual motility 86.15 + 0.30 per cent, live sperm count 90.58
+ 0.20 per cent, abnormal sperm count 4.24 + 0.03 per cent and
acrosomal integrity 81.17 + 0.11 per cent. The colour of the Kankrej bull
semen under the investigation was creamy white. Mean values of ejaculate volume,
sperm concentration, live sperm count and acrosomal integrity of semen differed
significantly (P < 0.05) among the bulls under investigation. The ejaculate
volume was positively correlated with mass motility (+ 0.392) and sperm
concentration (+ 0.385) and inversely proportional to the mass motility whereas
mass motility positively correlated with volume (+0.392), individual sperm
motility (+0.329) and live sperm count (+0.527).
Conclusion: It can be
concluded that the volume, pH, mass motility and sperm concentration of Kankrej
bull semen were well comparable with other breeds of Indian cattle, however
higher individual motility, live sperm count, acrosomal integrity and lower
abnormal sperm count were recorded in the Kankrej bull semen.
Keywords:
Kankrej bull, physical characteristics, semen, spermatozoal morphology
